Marijuana could be linked to fertility issues in women and men, researchers warn.

The drug, now legal in most US states and all of Canada, has been tipped as a therapeutic for all kinds of ailments, with one study even suggesting it could boost sperm counts.

But researchers at Western University in London, Ontario, Canada, say the broad picture of evidence suggests cannabis is linked to decreased sperm counts, hampered ovulation and reduced odds of conceiving.

The team is now calling for more research into how the drug affects reproductive health, especially because of increased use in US states and countries where pot is legalized.

Here are five things couples who are looking to get pregnant should consider when it comes to marijuana use:

A new analysis from Western University in London, Ontario, Canada, says research shows cannabis decrease sperm motility, prevent ovulation…